#7974. Population density modelling of mixed polymorphic phenotypes: an application of spatial mark-resight models

October 2026publication date
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Journal’s subject area:
Nature and Landscape Conservation;
Ecology;
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Abstract:
Melanism is a form of pigmentation polymorphism where individuals have darker colouration than what is considered the ‘wild’ phenotype. In the case of leopards, Panthera pardus, melanism occurs at higher frequencies amongst populations in tropical and subtropical moist forests of south and southeast Asia, presenting a unique challenge in estimating and monitoring these populations. Unlike the wild phenotype that is readily recognizable by its rosette patterns, melanism results in individuals being unidentifiable or ‘unmarked’ through photographic captures obtained using white flash cameras.
Keywords:
camera trapping; melanism; monitoring; Panthera pardus; population density; population estimate; spatial mark-resight

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